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Related Concept Videos

Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations01:26

Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

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Renal calculi, commonly termed kidney stones, are crystalline solid masses that form in the kidneys but can occur at any point within the urinary system, encompassing the kidneys, ureters, bladder, and urethra.The pathophysiology of renal stones involves several key factors: supersaturation of the urine with stone-forming constituents, changes in urine pH, a decrease in urine volume, and the presence of substances that promote or inhibit stone formation.Supersaturation of Urine: This is the...
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Urinary Tract Calculi III: Medical Management01:30

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The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...
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Urinary Tract Calculi I: Introduction01:28

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Renal calculi, or kidney stones, are solid deposits of minerals and salts formed inside the kidneys. In medical terminology, "calculus" refers to the stone itself, while "lithiasis" describes the process of stone formation. Depending on their location within the urinary system, these stones may be classified as either urolithiasis, when situated within the urinary tract, or nephrolithiasis, when located within the kidneys. Each term signifies the specific impact of the stone.Predisposition...
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Urinary Tract Calculi VI: Surgical Management01:25

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Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...
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Urinary Tract Calculi V: Nursing Management01:28

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AssessmentSubjective Data: Obtain a detailed health history, including any recent or chronic urinary tract infections, periods of immobilization, previous episodes of renal calculi, and medical conditions such as gout, benign prostatic hyperplasia, or hyperparathyroidism. Review the medication history for drugs that may influence stone formation, including allopurinol, analgesics, loop diuretics, or thiazide diuretics. Document the use of long-term indwelling catheters and any past surgical...
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Urinary Tract Calculi IV: Nutrition Therapy and Prevention01:27

Urinary Tract Calculi IV: Nutrition Therapy and Prevention

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Management of renal calculi focuses on effective strategies like tailored nutrition and hydration therapy. Adjusting diet and fluid intake reduces stone formation and recurrence, making these interventions simple yet powerful in kidney stone prevention and management.Understanding Kidney StonesKidney stones form when calcium, oxalate, uric acid, and cystine concentrate and crystallize in urine. Factors contributing to their formation include genetic predisposition, certain medical conditions,...
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Relationship between Urinary Parameters and Double-J Stent Encrustation.

Jose Luis Bauzá1,2, Paula Calvó3, Francesca Julià3

  • 1Urology Department, University Hospital Son Espases, 07120 Palma de Mallorca, Spain.

Journal of Clinical Medicine
|August 12, 2023
PubMed
Summary

Metabolic urine conditions significantly impact ureteral stent encrustations. Key factors include urine composition, pH, and indwelling time, influencing encrustation type and severity.

Keywords:
encrustationindwelling timeurinary stent

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Area of Science:

  • Urology
  • Nephrology
  • Biochemistry

Background:

  • Ureteral stents are prone to encrustation, complicating patient management.
  • Understanding factors influencing stent encrustation is crucial for improving outcomes.

Purpose of the Study:

  • To investigate the relationship between metabolic urine conditions and ureteral stent encrustation.
  • To determine how urine composition affects encrustation formation, severity, and type.

Main Methods:

  • Prospective study of 90 stone-former patients with double-J stents.
  • Collection of 24-hour metabolic urine samples and demographic data.
  • Macroscopic and microscopic analysis of stent encrustations, correlating with urine parameters.

Main Results:

  • 70% of stents showed encrustation, with 42% moderate.
  • Calcium oxalate was most common, but infectious phosphates dominated high encrustation.
  • Higher encrustation correlated with increased calciuria, uricosuria, indwelling time, and decreased diuresis.

Conclusions:

  • Metabolic urine conditions are critical determinants of double-J stent encrustation.
  • Specific urine metabolic profiles are linked to distinct encrustation types.
  • Urine pH, calciuria, uricosuria, and diuresis are key factors in stent encrustation severity.